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arXiv · 1409.0223

Updated reduced CMB data and constraints on cosmological parameters

Rong-Gen Cai·Zong-Kuan Guo·Bo Tang
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Abstract

We obtain the reduced CMB data $\{l_A, R, z_*\}$ from WMAP9, WMAP9+BICEP2, Planck+WP and Planck+WP+BICEP2 for the $Λ$CDM and $w$CDM models with or without spatial curvature. We then use these reduced CMB data in combination with low-redshift observations to put constraints on cosmological parameters. We find that including BICEP2 results in a higher value of the Hubble constant especially when the equation of state of dark energy and curvature are allowed to vary. For the $Λ$CDM model with curvature, the estimate of the Hubble constant with Planck+WP+Lensing is inconsistent with the one derived from Planck+WP+BICEP at about 1.3 $σ$ confidence level.

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Rong-Gen Cai, Zong-Kuan Guo, Bo Tang. 2015-07-03. Updated reduced CMB data and constraints on cosmological parameters. https://doi.org/10.1142/s0218271815500716

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